TY  - BOOK
AU  - Calow, Peter  .
TI  - Encyclopaedia of ecology and environmental management / 
SN  - 0-632-05546-4
U1  - G:55(8)k 
PY  - 1998///
CY  - London WCIN 2BL : 
PB  - Blackwell Science Ltd. , 
KW  - Environmental management- Encyclopedias
ER  -